Loud Pop then no heating power. Still runs, and diplays no error messages. Now when running it's very loud, with no heat...Loud Pop then no heating power. Still runs, and diplays no error messages. Now when running it's very loud, with no heat...

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The description you provide indicates the magnetron has failed, "heats food" and blown the main fuse in the microwave oven, since the unit is 10 years old it is much cheaper to replace with a new one rather than have it repaired.

Okay, first we need to separate the situations. You were boiling water on the stove and had the range hood fan running to **** up the steam. Then you put something in the microwave to heat and you heard a pop and then zip-o.

The water on the stove has nothing to do with the situation, the fan you turn on is not part of the microwave, so it has nothing to do with the microwave.

The pop you heard and then the humming suggests the magnetron failed. You said you found a blow fuse and replaced it and still nothing, right? The magnetron is the most likely culprit...I would think it is safe to say that the magnetron shorted and drew enough current to blow the fuse.

Replace the magnetron and if that doesn't work, let me know here. Good Luck!

Sounds like the magnetron has failed. This is the component that
produces the microwave that heats the food. The cost of the magnetron
is about 95% of the cost of a microwave .
Most people don't, for this reason, replace the magnetron, they replace
the whole oven which is probably what you will end up doing. There is a
possibility that the circuit that provides power to the magnetron is
faulty and you need to take it apart, find the proper electrical leads
and test them with a volt meter. To do this you have to remove it from
its mounting and take it apart. It is a fairly lengthy process however.